Power Density Simulation Report

FCC ID: A3LSMG977U

RF Exposure Info

Download: PDF
FCCID_4237533

FCC ID: A3LSMG977U Power Density Simulation Report April 4, 2019 SAMSUNG ELECTRONICS

1. Simulation methodology for Power Density (PD) 1.1 Simulation tool 1.1.1 Tool description For the simulation approach to calculating power density (PD) evaluation for mobile phone with mmWave antenna modules, ANSYS Electromagnetics suite version 19.2 (HFSS) is used. ANSYS HFSS is one of several commercial tools for 3D full-wave electromagnetic simulation used for antenna and RF structure design of high frequency component. ANSYS Electromagnetics suite version 19.2 (HFSS) is implemented based on Finite Element Method (FEM), which operates in the frequency domain. 1.1.2 Mesh and Convergence criteria To solve the PD analysis using FEM, volume area containing simulated objects should be subdivided into electrically small parts that are called finite elements as the unknown functions. To subdivide system, the adaptive mesh technique in ANSYS Electromagnetics suite version 19.2 (HFSS) is used. ANSYS Electromagnetics suite version 19.2 (HFSS) starts to refine the initial mesh based on wavelength and calculate the error to iterative process for adaptive mesh refinement. The determination parameter of the number of iteration in ANSYS Electromagnetics suite version 19.2 (HFSS) is defined as convergence criteria, delta S, and the iterative adaptive mesh process repeats until the delta S is met. In ANSYS Electromagnetics suite version 19.2 (HFSS), the accuracy of converged results depends on the delta S. Figure 1 is an example of final adaptive mesh of the device (cross-section of top view). Figure 1 Example of the adaptive mesh technique (Top view)

1.1.3 Power density calculation After solving 3D full-wave electromagnetic simulation, various kinds of physical quantities can be �⃗) and a magnetic obtained. To calculate PD evaluation, two physical quantities, an electric field (E ��⃗) are needed. The actual consumption power can be expressed as the real term of the Poynting field (H vector (S�⃗) from the cross product of E �⃗ and complex conjugation of H ��⃗ as shown below: 1 ⟨S�⃗⟩ = Re � �E⃗ × H ��⃗ ∗ � 2 ⟨S�⃗⟩ can be expressed as localized power density based on a peak value of each spatial point on mesh grids, and obtained directly from ANSYS Electromagnetics suite version 19.2 (HFSS). From the localized power density ⟨S�⃗⟩, the spatial-averaged power density (PD𝑎𝑎𝑎𝑎 ) on an evaluated area (A) can be derived as shown below: 1 1 PD𝑎𝑎𝑎𝑎 = � ⟨S�⃗⟩ ∙ 𝑑𝑑𝑑𝑑 = �⃗ × H � �𝑅𝑅𝑅𝑅(E ��⃗ ∗ )� ∙ 𝑑𝑑𝑑𝑑 𝐴𝐴 𝐴𝐴 2𝐴𝐴 𝐴𝐴 , where the spatial-averaged power density (PD𝑎𝑎𝑎𝑎 ) is total power density value considering on x, y and z components of localized power density ⟨S�⃗⟩ and the evaluated area (A) is 4cm2 . 1.2 Simulation setup 1.2.1 3D modeling Figure 2 shows the simulation model which is mounted three mmWave antenna modules. The simulation modeling includes most of the entire structure of device itself such as PCB, metal frame, battery, cables, and legacy antennas as well as mmWave antenna modules called as Ant J, Ant K and Ant L. On the back side view, Ant J is placed at the top side and antennas are facing the backside of the device. Ant K is placed on the left side and antennas are facing the left side, and Ant L is placed on the right side and antennas are facing the right side of the device.

Figure 2 Simulation model which is mounted three mmWave antenna modules 1.2.2 PD evaluation planes Table 1 shows the PD evaluation planes for each mmWave antenna module and Figure 3 shows the PD evaluation planes and truncation area of the simulation model to find worst case of beamforming cases. In Ant J and Ant K cases, five PD evaluation planes except bottom side are set up. Ant J and Ant K are placed at the upper of the device and the bottom side is excluded from the worst case because the distance from the bottom side is more than 10 lambda at 28GHz. In Ant L case, five PD evaluation planes except top side are set up, Ant L is placed at the lower of the device and the top side is excluded from the worst case for the same reason as Ant J and Ant K. Please note that the “right” and “left” edge of mentioned in this report are defined from the perspective of looking at the device from the back side. Table 1. PD evaluation planes Left Right Front Back From Front From Front Top Bottom View View S1 S2 S3 S4 S5 S6 Ant J O O O O O X Ant K O O O O O X Ant L O O O O X O

Figure 3. PD evaluation planes

1.2.3 Boundary condition To simulate electromagnetic tool based on FEM, the boundary condition allows electromagnetic waves to be electrically open at the boundary and radiated far away without reflection. ANSYS Electromagnetics suite version 19.2 (HFSS) can support the absorbing boundary condition (ABC) for radiation boundary and make normally a quarter wave length from the radiating structure. In this report, to cover all beamforming cases of mmWave antenna modules, the three wavelength spacing from the device is used. 1.2.4 Source excitation condition The number of antenna ports of ANT J, ANT K, and ANT L for source excitation consists of 16, 8, and 8, respectively. The antenna port of ANT J is divided into 8 ports for 1 x 4 patch array antennas and 8 ports for 1 x 4 dipole array antennas. In the 8 ports included in each patch antenna, 4 ports are divided into vertical polarization feeding, and the other 4 ports are divided into horizontal polarization feeding. The dipole array antennas consist of 4 antenna elements and each element uses two ports as a source excitation. All antenna ports of ANT K and ANT L are for patch array antennas and are similar to those of ANT J. Figure 4 shows the ANT J module structure and surrounding structure. The ANT J module is encrypted in the ANSYS Electromagnetics suite (HFSS) and can only check the feeding position. Figure 4. mmWave module (ANT J) After finishing 3D full wave electromagnetic simulation of modeling structure, the magnitude and phase information can be loaded for each port by using “Edit Sources” function in ANSYS Electromagnetics suite (HFSS). Figure 5 shows an example of antenna port excitations.

Figure 5. An example of port excitation (ANT J) Since ANSYS Electromagnetics suite (HFSS) uses FEM solver based on frequency domain analysis method, the input source for the port excitation applies sinusoidal waveform for each frequency. 1.2.5 Condition of simulation completion The simulation completion condition of ANSYS Electromagnetics suite (HFSS) is defined as delta S. The ANSYS Electromagnetics suite (HFSS) calculates the S-parameter for the mesh conditions of each step and determines whether to proceed with the operation of the next step by comparing the difference between the S-parameters in the previous step. A difference between the previous step and the current step of S-parameter is expressed as delta S, and the delta S generally sets 0.02. The simulation result of this report is the result of setting delta S to 0.02.

2. Simulation verification 2.1 Spatial-averaged power density As mentioned in the previous chapter, the Poynting vector (S�⃗) can be obtained through cross product �⃗) and complex conjugate of a magnetic field (H of an electric field (E ��⃗). The real term of the Poynting vector can be described as the localized power density or peak power density. Using the localized power density, the spatial-averaged power density can be obtained by the integral of 4 cm2 at 2.5 mm intervals of the localized power density result. Figure 6 shows examples of the distribution plot of localized power density and the averaged power density. Figure 6. Power density distribution 2.2 Comparison between simulation and measurement In this section, the simulated-power density distributions and measured-power density distributions are compared to each mmWave antenna. Based on comparison of power density distributions, simulated power density and measured power density have a good correlation. Measurement uncertainty in mmWave frequency in measurement side and inaccuracy of material properties in mmWave frequency in the simulation side are considered as error factors. The input powers per each active port are below for both Simulation and Measurement. For Simulation, these values were entered directly into HFSS model. For measurement, FTM S/W was used to input these values for each active port also. The maximum device output rating was determined to meet regulatory limits. Input Power (in dBm) Input Power (in dBm) Mode/Band Antenna SISO MIMO J Dipole 6.5 4.5 J Patch 6.5 4.5 5G NR n261 K Patch 8 6 L Patch 8 6

* The below simulation and measurement result were performed at 2mm Distance and 27.92GHz Ant J Patch Measured PD Measured PD Simulated PD Simulated PD Side Beam ID Channel (100% DC) (25% DC) (100% DC) (25% DC) mW/cm2 mW/cm2 mW/cm2 mW/cm2 Back 152 Mid 1.19 0.30 3.00 0.75 Back 24 Mid 1.31 0.33 2.68 0.67 Back 41/167 Mid 1.42 0.36 3.69 0.92 Back 24/156 Mid 1.65 0.41 3.56 0.89 Back 25/155 Mid 1.42 0.36 3.61 0.90 Back 27/152 Mid 1.48 0.37 3.56 0.89 Ant J Dipole Measured PD Measured PD Simulated PD Simulated PD Side Beam ID Channel (100% DC) (25% DC) (100% DC) (25% DC) mW/cm2 mW/cm2 mW/cm2 mW/cm2 Back 133 Mid 0.698 0.17 2.14 0.53 Back 16 Mid 1.07 0.27 2.35 0.59 Back 4/133 Mid 1.03 0.26 2.48 0.62 Back 4 Mid 1.07 0.27 2.21 0.55 Back 5 Mid 0.976 0.24 2.35 0.59 Back 17 Mid 0.656 0.16 1.84 0.46 Ant K Patch Measured PD Measured PD Simulated PD Simulated PD Side Beam ID Channel (100% DC) (25% DC) (100% DC) (25% DC) mW/cm2 mW/cm2 mW/cm2 mW/cm2 Right 157 Mid 1.26 0.32 1.90 0.47 Right 44 Mid 2.18 0.55 3.67 0.92 Right 45/172 Mid 2.05 0.51 3.66 0.91 Right 31 Mid 2.37 0.59 3.64 0.91 Right 30 Mid 1.93 0.48 3.61 0.90 Right 45 Mid 2.1 0.53 3.58 0.89 Ant L Patch Measured PD Measured PD Simulated PD Simulated PD Side Beam ID Channel (100% DC) (25% DC) (100% DC) (25% DC) mW/cm2 mW/cm2 mW/cm2 mW/cm2 Left 164 Mid 1.04 0.26 2.10 0.53 Left 49 Mid 1.64 0.41 3.40 0.85 Left 49/176 Mid 1.67 0.42 3.57 0.89 Left 36/163 Mid 1.61 0.40 3.25 0.81 Left 37/164 Mid 1.55 0.39 3.10 0.78 Left 35/165 Mid 1.73 0.43 2.87 0.72

 ANT J-Patch: Low Channel, Beam ID: 24/156, Back (a) measurement (b) simulation ANT J patch: Low Channel, Localized power density (a) measurement (b) simulation ANT J patch: Low Channel, averaged power density

 ANT J-Patch: Mid Channel, Beam ID: 24/156, Back (a) measurement (b) simulation ANT J patch: Mid Channel, Localized power density (a) measurement (b) simulation ANT J patch: Mid Channel, averaged power density

 ANT J-Patch: High Channel, Beam ID: 24/156, Back (a) measurement (b) simulation ANT J patch: High Channel, Localized power density (a) measurement (b) simulation ANT J patch: High Channel, averaged power density

 ANT J-Dipole: Low Channel, Beam ID 16, Back (a) measurement (b) simulation ANT J-Dipole: Low Channel, Localized power density (a) measurement (b) simulation ANT J-Dipole: Low Channel, averaged power density

 ANT J-Dipole: Mid Channel, Beam ID 16, Back (a) measurement (b) simulation ANT J-Dipole: Mid Channel, Localized power density (a) measurement (b) simulation ANT J-Dipole: Mid Channel, averaged power density

 ANT J-Dipole: High Channel, Beam ID 16, Back (a) measurement (b) simulation ANT J-Dipole: High Channel, Localized power density (a) measurement (b) simulation ANT J-Dipole: High Channel, averaged power density

 ANT K: Low Channel, Beam ID 31, Right (a) measurement (b) simulation ANT K: Low Channel, Localized power density (a) measurement (b) simulation ANT K: Low Channel, Averaged power density

 ANT K: Mid Channel, Beam ID 31, Right (a) measurement (b) simulation ANT K: Mid Channel, Localized power density (a) measurement (b) simulation ANT K: Mid Channel, averaged power density

 ANT K: High Channel, Beam ID 31, Right (a) measurement (b) simulation ANT K: High Channel, Localized power density (a) measurement (b) simulation ANT K: High Channel, averaged power density

 ANT L: Low Channel, Beam ID 35/165, Left (a) measurement (b) simulation ANT L: Low Channel, Localized power density (a) measurement (b) simulation ANT L: Low Channel, Averaged power density

 ANT L: Mid Channel, Beam ID 35/165, Left (a) measurement (b) simulation ANT L: Mid Channel, Localized power density (a) measurement (b) simulation ANT L: Mid Channel, averaged power density

 ANT L: High Channel, Beam ID 35/165, Left (a) measurement (b) simulation ANT L: High Channel, Localized power density (a) measurement (b) simulation ANT L: High Channel, averaged power density

3. Simulation results 3.1 PD for Mid Channel at 28GHz 3.1.1 Ant J – Patch/Dipole Antenna Table 2 shows the PD simulation evaluation of Ant J patch/dipole antenna at 28GHz for each evaluation plane. The input power for each port is shown below. Table 2. PD of Ant J – patch/dipole antenna (28GHz) M-CH PD Simulation @ Operating 2 2 mm 10mm 15mm (mW/cm ) Target Tx Power S4 S3 S5 S1 S4 S4 S4 SISO/MIMO Target Right Left Patch/ BEAM & Tx Power from from Top Front Rear Rear Rear Dipole ID Polarization (dBm) Front Front 6.5 24 0.0101 0.3089 0.4441 0.0215 2.6826 1.3260 0.9534 6.5 25 0.0101 0.0390 0.4588 0.0197 2.6374 1.4862 1.1747 6.5 26 0.0034 0.0288 0.3041 0.0126 2.3957 1.4386 1.2041 6.5 27 0.0412 0.0687 0.4312 0.0737 2.4315 1.0220 0.7494 Single beam 6.5 28 0.0516 0.2666 0.3043 0.0678 1.7219 0.7746 0.5347 H-pol 6.5 39 0.0099 0.2403 0.4551 0.0238 2.6624 1.3825 0.9972 6.5 40 0.0085 0.0361 0.2774 0.0122 2.3656 1.4106 1.1858 6.5 41 0.0199 0.0472 0.4935 0.0619 2.5650 1.3885 1.0546 6.5 42 0.0494 0.1862 0.3830 0.0756 2.4436 0.9460 0.6492 6.5 156 0.0186 0.3451 0.3802 0.0091 2.6669 1.0636 0.6986 6.5 155 0.0028 0.0885 0.3429 0.0155 2.9072 1.4983 1.0828 6.5 153 0.0093 0.0863 0.3765 0.0175 2.8788 1.6863 1.2972 6.5 152 0.0179 0.1550 0.4399 0.0227 3.0030 1.4986 1.0886 Single beam Patch 6.5 154 0.0053 0.0440 0.3292 0.0100 2.8799 1.7263 1.3096 V-pol 6.5 170 0.0127 0.2498 0.3797 0.0061 2.9038 1.2882 0.9177 6.5 168 0.0086 0.1012 0.3044 0.0107 2.7933 1.6921 1.2112 6.5 167 0.0120 0.1178 0.4228 0.0176 2.8458 1.6444 1.2074 6.5 169 0.0035 0.0729 0.3607 0.0100 2.9195 1.6636 1.2507 4.5 24 156 0.0174 0.6477 0.5071 0.0083 3.5589 1.4871 1.0684 4.5 25 155 0.0115 0.1603 0.4552 0.0086 3.6137 2.1360 1.6036 4.5 26 153 0.0167 0.0904 0.3362 0.0198 3.2836 1.9824 1.6282 ANT-J 4.5 27 152 0.0309 0.0874 0.4578 0.0429 3.5587 1.6389 1.1292 Paired beam 4.5 28 154 0.0351 0.2014 0.3672 0.0424 3.1068 1.3225 0.9305 4.5 39 170 0.0178 0.4887 0.4765 0.0168 3.4233 1.6167 1.1820 4.5 40 168 0.0127 0.1143 0.3787 0.0124 3.1399 1.9675 1.5455 4.5 41 167 0.0263 0.0998 0.5519 0.0655 3.6879 2.0531 1.4773 4.5 42 169 0.0383 0.1326 0.3166 0.0472 3.0061 1.3073 0.9490 6.5 0 0.0033 0.0373 0.5923 0.0320 1.0821 0.2523 0.1750 6.5 4 0.0165 0.0311 1.4906 0.0357 2.2138 0.8404 0.5819 Single beam 6.5 6 0.0299 0.1202 0.8084 0.0794 1.4388 0.3816 0.2500 H-pol 6.5 5 0.0137 0.0556 1.4500 0.0819 2.3459 0.8178 0.5461 6.5 17 0.0194 0.1041 1.0992 0.0944 1.8355 0.6067 0.4001 6.5 16 0.0223 0.0329 1.5346 0.0574 2.3515 0.8890 0.6309 6.5 128 0.0043 0.1073 0.4665 0.0223 0.9469 0.2030 0.1460 6.5 133 0.0007 0.0809 1.1777 0.0140 2.1373 0.6752 0.4297 Single beam 6.5 132 0.0125 0.2189 0.9643 0.0198 1.5833 0.5597 0.3557 Dipole V-pol 6.5 134 0.0011 0.4684 0.9938 0.0706 1.6661 0.5800 0.3764 6.5 144 0.0078 0.0967 1.1366 0.0379 1.9581 0.6795 0.4315 6.5 145 0.0008 0.3155 1.1456 0.0536 1.9823 0.6609 0.4257 4.5 128 0 0.0014 0.0264 0.7934 0.0349 1.3956 0.4532 0.3236 4.5 133 4 0.0146 0.0703 1.5830 0.0311 2.4780 0.9496 0.6832 4.5 132 6 0.0259 0.1661 1.4206 0.0540 1.9945 0.8064 0.5863 Paired Beam 4.5 134 5 0.0089 0.2710 1.0144 0.0779 1.6996 0.5751 0.3651 4.5 144 17 0.0286 0.0700 1.5934 0.0672 2.3802 0.9482 0.7481 4.5 145 16 0.0064 0.2892 1.1344 0.0468 1.7419 0.7148 0.4997

3.1.2 Ant K – Patch Antenna Table 3 shows the PD simulation evaluation of Ant K patch antenna at 28GHz for each evaluation plane. The input power for each port is shown below. Table 3. PD of Ant K – patch antenna (28GHz) M-CH PD Simulation @ Operating 2 mm 10mm 15mm (mW/cm2) Target Tx Power S2 S3 S5 S1 S4 S4 S2 S4 S2 SISO/MIMO Target Tx Left Right Right Right Patch/ & Power BEAM ID Rear from Top Front from from Rear from Rear Dipole Polarization (dBm) Front Front Front Front 8 29 2.2487 0.0044 0.1542 0.1778 2.2487 0.5030 0.5700 0.2164 0.0976 8 32 2.6736 0.0033 0.0510 0.2372 3.0684 1.8082 1.3691 1.3726 0.9846 8 33 2.0676 0.0078 0.1417 0.2796 1.1011 0.9814 0.8033 0.6679 0.5352 8 31 3.0679 0.0022 0.0254 0.2154 3.6363 2.1591 1.6168 1.6838 1.1987 Single beam 8 30 2.9507 0.0017 0.0324 0.3011 3.6101 1.9068 1.5272 1.2231 0.9318 H-pol 8 45 2.9813 0.0021 0.0618 0.2538 3.5761 2.1498 1.5545 1.6475 1.1854 8 43 2.6247 0.0025 0.0855 0.2648 2.7426 1.1588 0.9856 0.6445 0.5340 8 46 2.2177 0.0066 0.1024 0.1753 1.0353 1.0851 0.9494 0.7908 0.6529 8 44 3.0224 0.0021 0.0098 0.2591 3.6680 2.1456 1.5919 1.6133 1.1938 8 157 0.7023 0.0049 0.0520 0.3620 1.8989 0.5895 0.2673 0.3097 0.1369 ANT-K 8 159 1.3464 0.0089 0.0509 0.4542 1.4535 1.0987 0.7204 0.8661 0.5883 8 161 0.6864 0.0056 0.0415 0.3068 1.4208 0.6857 0.4687 0.4749 0.2043 8 158 1.8242 0.0106 0.0195 0.5175 1.5267 0.9606 1.1169 0.7756 0.3357 Single beam Patch 8 160 0.8241 0.0047 0.0536 0.3975 1.8266 0.9933 0.4542 0.7315 0.2480 V-pol 8 172 1.6381 0.0109 0.0256 0.5082 1.7746 1.1667 0.9553 0.9215 0.6805 8 171 1.3434 0.0164 0.0217 0.4615 1.4491 0.8380 0.7841 0.6373 0.6150 8 174 0.7916 0.0050 0.0478 0.3534 1.6763 0.8653 0.4875 0.6304 0.3960 8 173 1.1191 0.0101 0.0834 0.4321 1.4669 1.0132 0.4304 0.7657 0.3943 6 29 157 2.3243 0.0058 0.1773 0.4135 3.1760 0.8666 0.4898 0.3716 0.1379 6 32 159 2.4751 0.0116 0.0544 0.4046 2.6206 1.6967 1.2148 1.2958 0.6822 6 33 161 2.1219 0.0062 0.1181 0.2924 2.8084 1.3917 0.8882 1.0268 0.3202 6 31 158 2.9877 0.0081 0.0379 0.5008 3.3842 1.9626 1.0783 1.5241 0.3073 Paired beam 6 30 160 2.7334 0.0033 0.0542 0.3364 3.3783 1.7111 1.3019 1.0611 0.8162 6 45 172 3.2012 0.0091 0.0723 0.4798 3.6589 2.0914 1.3684 1.6026 0.5097 6 43 171 2.5901 0.0180 0.0731 0.3293 2.5535 0.9394 1.0843 0.5311 0.7701 6 46 174 3.0242 0.0030 0.1307 0.3046 3.4198 1.7353 1.1734 1.2264 0.7804 6 44 173 3.0125 0.0112 0.0430 0.3667 3.4830 2.0508 1.5472 1.5078 0.3152

3.1.3 Ant L – Patch Antenna Table 4 shows the PD simulation evaluation of Ant L patch antenna at 28GHz for each evaluation plane. The input power for each port is shown below. Table 4. PD of Ant L – patch antenna (28GHz) M-CH PD Simulation @ Operating 2mm 10mm 15mm (mW/cm2) Target Tx Power S4 S6 S1 S2 S3 S2 S3 S2 S3 SISO/MIMO Target Tx Right Left Left Left Patch/ & Power BEAM ID from Bottom Front Rear from Rear from Rear from Dipole Polarization (dBm) Front Front Front Front 8 35 0.0035 0.0296 0.0308 3.0332 3.3240 1.5179 1.9189 1.1152 1.4068 8 36 0.0014 0.0022 0.2105 3.0085 3.3326 1.5726 1.9446 1.1631 1.4484 8 34 0.0168 0.0062 0.2499 2.9014 2.9740 1.3891 1.5892 0.9624 1.1428 8 38 0.0152 0.0658 0.0689 2.6502 2.3487 1.0031 1.0498 0.5716 0.6099 Single beam 8 37 0.0035 0.0110 0.2332 3.1048 3.2988 1.4880 1.7090 1.1103 1.2202 H-pol 8 48 0.0009 0.0201 0.0297 3.0330 3.3534 1.5337 1.9718 1.1382 1.4620 8 49 0.0009 0.0062 0.2230 3.1128 3.4028 1.6182 1.8277 1.0449 1.3940 8 47 0.0105 0.0168 0.2083 2.9784 3.1838 1.5179 1.7722 1.0649 1.3462 8 50 0.0120 0.0393 0.2385 2.9080 2.8473 1.3218 1.4179 0.8704 0.9687 8 165 0.0545 0.0105 0.4545 1.2909 1.5742 0.4007 1.0809 0.2990 0.8428 8 163 0.0485 0.0018 0.6780 0.8334 1.8330 0.4957 1.3152 0.3853 1.0413 ANT-L 8 166 0.0289 0.0045 0.2683 0.6863 1.3252 0.3655 0.6783 0.2776 0.4936 8 162 0.0289 0.0078 0.1564 1.7397 0.9669 0.3600 0.4637 0.2817 0.2509 Single beam Patch 8 164 0.0933 0.0057 0.6626 1.3349 2.1025 0.7001 1.3469 0.5124 1.0714 V-pol 8 177 0.0708 0.0107 0.6172 1.6557 1.6409 0.5123 1.2987 0.3808 1.0304 8 176 0.1073 0.0016 0.7247 1.0832 2.0477 0.6433 1.4176 0.4651 1.1496 8 178 0.0490 0.0044 0.3436 0.6298 1.4469 0.4926 0.7813 0.3810 0.5772 8 175 0.0095 0.0037 0.3096 0.0037 1.2906 0.3222 0.5020 0.2346 0.4500 6 35 165 0.0378 0.0433 0.5100 2.6956 2.8749 1.0970 1.8258 0.8376 1.3367 6 36 163 0.0305 0.0026 0.5965 2.7792 3.2455 1.2182 1.8678 0.7857 1.4235 6 34 166 0.0214 0.0118 0.3697 1.9669 2.3164 0.8066 1.1584 0.4951 0.7743 6 38 162 0.0219 0.0371 0.3324 2.2563 2.5180 0.7976 1.1630 0.4614 0.7693 Paired beam 6 37 164 0.0826 0.0024 0.5254 2.5215 3.1040 0.9282 1.4464 0.6632 1.0110 6 48 177 0.0441 0.0425 0.5990 2.8661 2.7267 1.1494 2.0323 0.7606 1.5040 6 49 176 0.0683 0.0055 0.6012 2.7221 3.5738 1.2448 2.0974 0.8041 1.6064 6 47 178 0.0373 0.0193 0.4232 2.1434 2.7208 0.8746 1.3384 0.5652 0.8786 6 50 175 0.0163 0.0154 0.3562 2.6018 2.8677 1.0480 1.5563 0.6362 1.1155

4. Uncertainty The amplitude level of PD simulation is biased due to material property parameter configuration in device housing at high frequencies. Material property is difficult to model due to complexity of material and operating frequency. Therefore, it is not possible to assign an exact uncertainty for simulation result. However, for this RF exposure evaluation, simulation results were only used to select highest beam ID measurement. Power Density results for measurement and simulation showed similar trend to justify selection of Beam ID used for measurement. All final power density evaluation were performed on measurement system with uncertainty approximately 1.48dB.


Document Created: 2019-04-13 05:11:39
Document Modified: 2019-04-13 05:11:39
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC